Climbing structure



FIG. 1 is a left side perspective view illustrating my new design.

FIG. 2 is a right side perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a left side elevation view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for climbing structure, as shown and described. 